贺信 hèxìn congratulatory letter or message
How to remember 贺信: 贺 congratulate + 信 letter = congratulatory letter or message.
Characters
How it is used
- A letter of congratulation - 发来贺信 (fā lái hèxìn) to send a congratulatory letter; 致贺信 (zhì hèxìn) to extend a message of congratulations.
- Formal/official; sent for anniversaries, appointments, achievements.
- Parallel with 贺电 (hèdiàn, congratulatory telegram/message) - 信 is a letter, 电 a wired message.